What is the main effect of a non-feeding expansion valve in a refrigerating system?

The main effect of a non-feeding expansion valve in a refrigerating system is that it reduces cooling efficiency. This occurs because the valve's inability to regulate the flow of refrigerant effectively prevents the system from achieving optimal cooling performance. When the expansion valve is not allowing the right amount of refrigerant to enter the evaporator coil, it creates an unbalanced system where not enough refrigerant is available to absorb heat from the surroundings.

Consequently, this inefficiency can lead to improper heat exchange, causing the evaporator to operate less effectively. As a result, the overall cooling capacity of the system is compromised, thereby reducing the cooling efficiency. Additionally, the pressure may not increase in the compressor as it could in a well-functioning system with a correctly operating expansion valve; instead, it may lead to other issues related to refrigerant flow and temperature management.